May I ask how to use Harvest to obtain pitch data separately

Hi, I'm new to WORLD. IT is obviously an awesome software but I was wondering how I can use it in realtime, since it is the main point of the original paper. I'm doing some like this now, but the result is very choppy:

def apply(vocoder,fs,x_int16):
    #fs, x_int16 = wavread(wav_path)
    x = x_int16 / (2 ** 15 - 1)
    
    # analysis
    dat = vocoder.encode(fs, x,f0_method ='harvest')# f0_method='harvest', is_requiem=False) # use requiem analysis and synthesis
    

    dat = vocoder.scale_pitch(dat, 1.5)

    dat = vocoder.decode(dat)
    return (dat['out'] * 2 ** 15).astype(np.int16)

i'm applying the function to 1024 bytes of the stream that I get. any ideas how I can improve?

Hello

I wanted to experiment with the D4C measure. I have a question and a suggestion

I don't quite see the difference reason to have a d4cRequiem version. Could you explain what the Requiem means here ?

On a side note: I stumbled a bit when reading round_matlab :

This is a little bit confusing as the function does in fact not round it just returns a float array that if converted to int does matlab rounding. How about using this as replacement

def round_matlab(x):
  return np.floor(x + 0.5*np.sign(x))

using pure numpy (no numba) this function is 3 times faster than your version and does indeed round.

Thanks for your word.

As the titled, I can not find this two functions in world/main. How can I reproduce them line by line?

Not everyone uses pycharm for all their python development

I was trying to modify duration for a sub-duration of a signal, but realized that the synthesizer doesn't generate good quality output. I then noticed this line in the example:
https://github.com/tuanad121/Python-WORLD/blob/master/example/prosody.py#L44
and the modify_duration function, which seems to be exactly what I wanted:
https://github.com/tuanad121/Python-WORLD/blob/master/world/main.py#L177

Seems like the current code fails on this operation? Is there any understand why this is happening?

Please Help to female audio file to male. Can it be done using this library?

I am getting this error every time I try
ValueError: operands could not be broadcast together with shapes (144,) (2,). the code is as follows:

from scipy.io.wavfile import read as wavread
wav_path = '/content/thats-okay-1.wav'
fs, x_int16 = wavread(wav_path)
x = x_int16 / (2 ** 15 - 1)
from world import main
vocoder = main.World()

analysis

dat = vocoder.encode(fs, x,f0_method ='harvest')# f0_method='harvest', is_requiem=False)